alsa/alsasound

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#!/bin/sh
#
# alsasound This shell script takes care of starting and stopping
# the ALSA sound driver.
#
# This script requires /usr/sbin/alsactl program from alsa-utils package.
#
# Copyright (c) by Jaroslav Kysela <perex@suse.cz>
#
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
#
# For RedHat 5.0+:
# chkconfig: 2345 87 14
# description: ALSA driver
#
# modified to visually fit into SuSE 6.0+ by Philipp Thomas <pthomas@suse.de>
# further improvements by Bernd Kaindl, Olaf Hering and Takashi Iwai.
#
### BEGIN INIT INFO
# Provides: alsasound
# Required-Start:
# Should-Start: $remote_fs resmgr
# Required-Stop:
# Should-Stop: $remote_fs resmgr
# Default-Start: 2 3 5
# Default-Stop:
# Description: Loading ALSA drivers and store/restore the current setting
### END INIT INFO
. /etc/rc.status
. /etc/sysconfig/sound
# Shell functions sourced from /etc/rc.status:
# rc_check check and set local and overall rc status
# rc_status check and set local and overall rc status
# rc_status -v ditto but be verbose in local rc status
# rc_status -v -r ditto and clear the local rc status
# rc_failed set local and overall rc status to failed
# rc_reset clear local rc status (overall remains)
# rc_exit exit appropriate to overall rc status
# First reset status of this service
rc_reset
alsactl=/usr/sbin/alsactl
asoundcfg=/etc/asound.state
aconnect=/usr/bin/aconnect
lsmod=/bin/lsmod
#
# insert sequencer modules
#
load_sequencer() {
test "$LOAD_SEQUENCER" = "yes" && modprobe -q snd-seq
if [ x"$LOAD_SEQUENCER" = xyes -a -r /proc/asound/seq/drivers ]; then
OLDIFS="$IFS"
IFS=","
while read t x c; do
/sbin/modprobe $t
done < /proc/asound/seq/drivers
IFS="$OLDIFS"
fi
}
get_drivers() {
if [ -f /etc/modprobe.d/sound ]; then
cat /etc/modprobe.d/sound
else
/sbin/modprobe -c
fi | \
grep -E "^[[:space:]]*alias[[:space:]]+snd-card-[[:digit:]]" | sort | \
while read a b card; do
echo $card
done
}
#
# insert all sound modules
#
load_modules() {
module_loaded=0
c=""
drivers=`get_drivers`
for i in $drivers; do
if [ $i != off ]; then
if [ x$c = x ]; then
echo -n ": "
c=1
fi
echo -n " ${i##snd-}"
/sbin/modprobe $i && module_loaded=1
fi
done
rc_status -v -r
test $module_loaded -eq 0 && return 1
return 0
}
#
# rest of start action
#
start_rest() {
load_sequencer
if [ x"$LOAD_OSS_EMUL_MODULES" = xyes ]; then
/sbin/modprobe snd-pcm-oss
test x"$LOAD_OSS_SEQ_MODULE" = xyes && /sbin/modprobe snd-seq-oss
fi
}
# manual load and force to store the status
start_all() {
echo -n "Starting sound driver"
load_modules && start_rest
# hack - in case the mixer isn't restored
(sleep 1; $alsactl -F -f $asoundcfg restore >/dev/null 2>&1)
rc_status
}
terminate() {
#
# Kill processes holding open sound devices
#
fuser -k /dev/admmidi* /dev/adsp* /dev/amidi* /dev/audio* /dev/dmfm* \
/dev/dmmidi* /dev/dsp* /dev/dspW* /dev/midi* /dev/mixer* /dev/music \
/dev/patmgr* /dev/sequencer* /dev/sndstat >/dev/null 2>&1
if [ -d /dev/snd ]; then
fuser -k /dev/snd/* >/dev/null 2>&1
fi
#
# remove all sequencer connections if any
#
if [ -f /proc/asound/seq/clients -a -x $aconnect ]; then
$aconnect --removeall
fi
}
# mute master to avoid clicks at unload/shutdown
unmute_system() {
/usr/bin/amixer set Master mute >/dev/null 2>&1
}
#
# remove all sound modules
#
unload_modules() {
unmute_system
$lsmod | grep -E "^snd" | grep -Ev "(snd-page-alloc|snd_page_alloc)" | while read m s; do
/sbin/rmmod $m
done
}
unload_all() {
echo -n "Shutting down sound driver"
terminate
unload_modules
rc_status -v
}
stop_all() {
if [ -d /proc/asound ]; then
$alsactl -f $asoundcfg store
unload_all
fi
}
# See how we were called.
case "$1" in
start)
if [ "$PREVLEVEL" = "N" ]; then
test -d /proc/asound && start_rest
else
start_all
fi
;;
stop)
if [ "$RUNLEVEL" = "6" ]; then
if [ -d /proc/asound ]; then
$alsactl -f $asoundcfg store
unmute_system
fi
else
stop_all
fi
;;
unload)
test -d /proc/asound && unload_all
;;
reload|restart)
stop_all
start_all
;;
status)
if [ -d /proc/asound ]; then
echo -n "ALSA sound driver loaded."
rc_status -v
else
echo -n "ALSA sound driver not loaded."
rc_status -u
fi
;;
*)
echo "Usage: $0 {start|stop|restart|reload|unload|status}"
exit 1
esac
rc_exit